import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [
      {
        path: 'dashboard',
        name: 'Dashboard',
        component: () => import('@/views/dashboard/index'),
        meta: { title: '数据概览', icon: 'dashboard' }
      }
    ]
  },

  {
    path: '/example',
    component: Layout,
    redirect: '/example/table',
    name: 'Example',
    meta: { title: '后台管理', icon: 'el-icon-s-help' },
    children: [
      {
        path: 'table',
        name: 'Table',
        component: () => import('@/views/user/index'),
        meta: { title: '用户', icon: 'table' }
      },
      {
        path: 'tree',
        name: 'Tree',
        component: () => import('@/views/menu/index'),
        meta: { title: '菜单', icon: 'tree' }
      }
    ]
  },

  {
    path: '/form',
    component: Layout,
    children: [
      {
        path: 'index',
        name: 'Form',
        component: () => import('@/views/businessAdmin/index'),
        meta: { title: '企业管理', icon: 'form' }
      }
    ]
  },

  {
    path: '/nested',
    component: Layout,
    redirect: '/nested/menu1',
    name: 'Nested',
    meta: {
      title: '题库管理',
      icon: 'el-icon-s-order'
    },
    children: [
      {
        path: 'menu1-1',
        component: () => import('@/views/nested/menu1/menu1-1'),
        name: 'Menu1-1',
        meta: { title: '基础题库', icon: 'el-icon-menu' }
      },
      {
        path: 'menu1-2',
        component: () => import('@/views/nested/menu1/menu1-2'),
        name: 'Menu1-2',
        meta: { title: '精选题库', icon: 'el-icon-menu' }
      },
      {
        path: 'menu1-3',
        component: () => import('@/views/nested/menu1/menu1-3'),
        name: 'Menu1-3',
        meta: { title: '试题录入', icon: 'el-icon-menu' }
      },
      {
        path: 'menu1-4',
        component: () => import('@/views/nested/menu1/menu1-4'),
        name: 'Menu1-4',
        meta: { title: '组题列表', icon: 'el-icon-menu' }
      }
    ]
  },

  {
    path: '/external-link',
    component: Layout,
    redirect: '/external-link/subject',
    name: 'External',
    meta: { title: '学科管理', icon: 'table' },
    children: [
      {
        path: 'subject',
        name: 'Subject',
        component: () => import('@/views/subject/index'),
        meta: { title: '学科', icon: 'tree' }
      },
      {
        path: 'contents',
        name: 'Contents',
        component: () => import('@/views/contents/index'),
        meta: { title: '目录', icon: 'tree' }
      },
      {
        path: 'label',
        name: 'Label',
        component: () => import('@/views/label/index'),
        meta: { title: '标签', icon: 'tree' }
      }
    ]
  },

  {
    path: '/interview',
    component: Layout,
    children: [
      {
        path: 'interview',
        name: 'interview',
        component: () => import('@/views/interview/index'),
        meta: { title: '面试技巧', icon: 'form' }
      }
    ]
  },
  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () =>
  new Router({
    // mode: 'history', // require service support
    scrollBehavior: () => ({ y: 0 }),
    routes: constantRoutes
  })

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
